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3 years ago

There are 52 pens in 3 boxes. How many pens are in 12 boxes?

Mathematics

1 answer:

DaniilM [7]3 years ago

8 0

Answer:

208 pens

Step-by-step explanation:

Lets make fractions with this information: 52/x = 3/12

Cross multiply: 52 * 12 = 3x

Multiply: 624 = 3x

Divide each side by 3: 208 = x, so 208 pens

I hope this helped, please mark Brainliest, thank you!

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Help!!

Elza [17]

Answer:

$(b)\ 2x - 9 = -1$

$(c)\ -2x + 12 = 4$

$(e)\ 2(x - 10) = -12$

Step-by-step explanation:

Required

Which equals $x = 4$

$(a)\ 2x + 6 = 2$

Collect like terms

$2x = 2 - 6$

$2x = -4$

Divide both sides by 2

$x = -2$

$(b)\ 2x - 9 = -1$

Collect like terms

$2x = -1 + 9$

$2x = 8$

Divide both sides by 2

$x = 4$

$(c)\ -2x + 12 = 4$

Collect like terms

$-2x =- 12 + 4$

$-2x =-8$

Divide both sides by -2

$x = 4$

$(d)\ 2(x + 2) = 10$

Divide both sides by 2

$x + 2 =5$

Collect like terms

$x = 5-2$

$x = 3$

$(e)\ 2(x - 10) = -12$

Divide both sides by 2

$x - 10 = -6$

Collect like terms

$x = 10 - 6$

$x = 4$

Hence, the equations with the required solution are:

$(b)\ 2x - 9 = -1$

$(c)\ -2x + 12 = 4$

$(e)\ 2(x - 10) = -12$

3 0

2 years ago

What is 16.93 x 107 x 102 - 103 x 104 = 105 equal to?<br> 0.01693<br> 1,693<br> 1.693<br> 1,693,000

77julia77 [94]

Answer:

Its the fourth one 1693000

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

A circle has an area of 50 square meters what is the diameter

topjm [15]

Area = πr²
50 = πr²
r = √50/π

so diameter = 2√50/π
which is = 7.98m to 3sf

7 0

3 years ago

Read 2 more answers

Erify that f has an inverse. then use the function f and the given real number a to find (f −1)'(a). (hint: see example 1. if an

zhannawk [14.2K]

The function

... f(x) = (x+2)/(x-1) = 1 + 3/(x-1)

is symmetrical about the line y=x, hence is its own inverse.

We can evaluate the desired derivative directly.

... f'(x) -3/(x-1)²

so f'(2) is

... f'(2) = -3/(2-1)²

$(f^{-1})(2)=-3$

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3 years ago

Determine if the following system of equations has no solutions, infinitely many

Lesechka [4]

Step-by-step explanation:

5x+6=1

5x=1-6

5x=-5

x=-1 in -5x-8y=2

-5(-1)-8y=2

5-8y=2

-8y =2-5

-8y=-3

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3 years ago